Improvement in lamps



C. F'. SPENCER.

LAMP. l No.171,537. Patented Dec. 28,1875.

N-iPETERS, PHOTO-UTHDGRAPHEH. WASHINGTON. D C4 UETTEE STATES PATENTOFFICE CHARLES F. SPENCER, OF ROCHESTER, NEW YORK.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 171,537, dated December28, 1875; application led December 2l, 1875.

To all whom' it may concern Be it known that I, CHARLES F. SPENCER, ofRochester, in the county of Monroe and State of New York, have inventedcertain new and useful Improvements in Lamps, of which the following isa specification:

This invention relates to certain improvements in that class of lampswhich are termed students lamps;77 and the present invention consists,essentially, of a vertical supportingrod, on which is arranged anelongated horizontal reservoir or chamber for holding the burning uid,the said reservoir being provided at each end with a burner of anypreferred construction adapted to receive a chimney, and a frame forsupporting a shade, said rod or support passing through the centralportion of the horizontal oil chamber or reservoir, and through a tubeor sleeve having at one end a head, and at the other end a screwthread,to which is fitted a nut for holding the sleeve in place. The sleeve,being arranged on the vertical rod and with the reservoir, isconstructed to revolve or rotate on the rod, the lower end of the sleeveor tube resting upon a collar arranged on the rod, and

through which passes a thumb-nut for binding the collar on the rod, bywhich means the oil-reservoir and its burners can be adjusted to .anydesiredposition and held by thc collar, allas will be fully hereinafter'described.

In the accompanying drawing, Figure lis a perspective view of myimprovedlamp; Fig. 2, a vertical longitudinal section of the same; Fig.3, a transverse sectional view of the'reservoir for containing theburning-Huid, showing a portion of the supporting-rod.

In the accompanying drawings illustrating my invention, the letter Arepresents a foot or base, from which rises a vertical standard or rod,B, which is preferably of a round form, and is provided at its extremeend with a suitable handle, C, by which it can be car.- ried. Drepresents an elongated reservoir or chamber for holding theburning-fluid', and it is by preference of a circular shape incrosssection, and is arranged in a 4horizontal position on the verticalsupporting-rod, so that the latter passes directly through its center.In the present example I have shown a tube or sleeve, E, passing throughthe oil-reservoir, which sleeve is provided at one end with a head, a,which bears on the upper side of the reservoir, and the other end, whichprojects through the opposite side, is provided with a screw-thread, towhich is fitted a screw-nut, b, for confining the sleeve in place. Thepassage through the sleeve is of the same shape or contour asthesupportingrod, so that the reservoir and its sleeve can be freelyrevolved or rotated. At or near each end of the reservoir D is.constructed an I The lower end of the tube or sleeve which carries theoil-reservoir rests upon a collar, I, arranged on the supporting-rod,and is adjustable thereon by means of a thumb-nut, K, which passesthrough the collar and binds .against the rod A, whereby theoil-reservoir,

with its burners, can be adjusted and supported at any desired positionon the rod by means of said collar.

l A lamp constructed as hereinbefore described is very simple. Theadvantage of two burners are secured without increasing the size of thelamp, and the reflection of light is superior to any lamp of thecharacter heretofore constructed; and, moreover, by

constructing and arranging the oil-reservoir so as to render it capableof being revolved or rotated on its supporting-rod it is very convenientand desirable in use.

I have shown the oil-reservoir as being provided only at each end with'aburner; but it is evident that'other burners can be added to the sameWhere the oil-reservoir is extended laterally opposite thesupporting-rod, either on one or both sides, and provided with alburner.

What I claim, and desire to secure by Letters Patent, is f Thecombination, with the rod A and hori have hereunto set my hand in thepresence of t zonml oil-reservoir, provided at each end with thesubscribing Witnesses. A

a. burner, of the adjustable collar and its thumb-nut for holding thereservoir in any CHAS. F. SPENCER. desired position on the rod,substantially as Witnessesz t described. Y JAMES L. N ORRIS,

In testimony that I claim the foregoing I ALBERT H. NORRIS.

